a) $\frac{3}{7}$+ (-$\frac{5}{2}$ ) + (-$\frac{3}{5}$ )
b) (-$\frac{4}{3}$ ) + (-$\frac{2}{3}$ ) + (-$\frac{4}{3}$ )
a) $\frac{3}{7}$+ (-$\frac{5}{2}$ ) + (-$\frac{3}{5}$ ) b) (-$\frac{4}{3}$ ) + (-$\frac{2}{3}$ ) + (-$\frac{4}{3}$ )
By Hadley
By Hadley
a) $\frac{3}{7}$+ (-$\frac{5}{2}$ ) + (-$\frac{3}{5}$ )
b) (-$\frac{4}{3}$ ) + (-$\frac{2}{3}$ ) + (-$\frac{4}{3}$ )
Bạn tham khảo
`a) =30/70-175/70-42/70`
`= -187/70`
`b) = (-4-2-4)/3`
`= -10/3`